layoutdirection.qml Example File

  /****************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** You may use this file under the terms of the BSD license as follows:
  **
  ** "Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/

  import QtQuick 2.0

  Rectangle {
      id: root
      property bool mirror
      property int direction: Qt.application.layoutDirection
      LayoutMirroring.enabled: mirror
      LayoutMirroring.childrenInherit: true
      width: 320
      height: 480
      Column {
          id: columnA
          spacing: 10
          x: 10
          y: 10
          width: 140

          Item {
              id: rowCell
          }
          Text {
              text: "Row"
              anchors.horizontalCenter: parent.horizontalCenter
          }

          Row {
              layoutDirection: root.direction
              spacing: 10
              move: Transition {
                  NumberAnimation {
                      properties: "x"
                  }
              }
              Repeater {
                  model: 3
                  Loader {
                      property int value: index
                      sourceComponent: positionerDelegate
                  }
              }
          }

          Text {
              text: "Grid"
              anchors.horizontalCenter: parent.horizontalCenter
          }

          Grid {
              layoutDirection: root.direction
              spacing: 10; columns: 3
              move: Transition {
                  NumberAnimation {
                      properties: "x"
                  }
              }
              Repeater {
                  model: 8
                  Loader {
                      property int value: index
                      sourceComponent: positionerDelegate
                  }
              }
          }

          Text {
              text: "Flow"
              anchors.horizontalCenter: parent.horizontalCenter
          }

          Flow {
              layoutDirection: root.direction
              spacing: 10; width: parent.width
              move: Transition {
                  NumberAnimation {
                      properties: "x"
                  }
              }
              Repeater {
                  model: 8
                  Loader {
                      property int value: index
                      sourceComponent: positionerDelegate
                  }
              }
          }
      }
      Column {
          id: columnB
          spacing: 10
          x: 160
          y: 10

          Text {
              text: "ListView"
              anchors.horizontalCenter: parent.horizontalCenter
          }

          ListView {
              id: listView
              clip: true
              width: parent.width; height: 40
              layoutDirection: root.direction
              orientation: Qt.Horizontal
              model: 48
              delegate: viewDelegate
          }

          Text {
              text: "GridView"
              anchors.horizontalCenter: parent.horizontalCenter
          }

          GridView {
              clip: true
              width: 150; height: 160
              cellWidth: 50; cellHeight: 50
              layoutDirection: root.direction
              model: 48
              delegate: viewDelegate
          }

          Rectangle {
              height: 50; width: parent.width
              color: mouseArea.pressed ? "black" : "gray"
              Column {
                  anchors.centerIn: parent
                  Text {
                      text: root.direction ? "Right to left" : "Left to right"
                      color: "white"
                      font.pixelSize: 16
                      anchors.horizontalCenter: parent.horizontalCenter
                  }
                  Text {
                      text: "(click here to toggle)"
                      color: "white"
                      font.pixelSize: 10
                      font.italic: true
                      anchors.horizontalCenter: parent.horizontalCenter
                  }
              }
              MouseArea {
                  id: mouseArea
                  anchors.fill: parent
                  onClicked: {
                      if (root.direction == Qt.LeftToRight) {
                          root.direction = Qt.RightToLeft;
                      } else {
                          root.direction = Qt.LeftToRight;
                      }
                  }
              }
          }

          Rectangle {
              height: 50; width: parent.width
              color: mouseArea2.pressed ? "black" : "gray"
              Column {
                  anchors.centerIn: parent
                  Text {
                      text: root.mirror ? "Mirrored" : "Not mirrored"
                      color: "white"
                      font.pixelSize: 16
                      anchors.horizontalCenter: parent.horizontalCenter
                  }
                  Text {
                      text: "(click here to toggle)"
                      color: "white"
                      font.pixelSize: 10
                      font.italic: true
                      anchors.horizontalCenter: parent.horizontalCenter
                  }
              }
              MouseArea {
                  id: mouseArea2
                  anchors.fill: parent
                  onClicked: {
                      root.mirror = !root.mirror;
                  }
              }
          }
      }

      Component {
          id: positionerDelegate
          Rectangle {
              width: 40; height: 40
              color: Qt.rgba(0.8/(parent.value+1),0.8/(parent.value+1),0.8/(parent.value+1),1.0)
              Text {
                  text: parent.parent.value+1
                  color: "white"
                  font.pixelSize: 18
                  anchors.centerIn: parent
              }
          }
      }
      Component {
          id: viewDelegate
          Item {
              width: (listView.effectiveLayoutDirection == Qt.LeftToRight  ? (index == 48 - 1) : (index == 0)) ? 40 : 50
              Rectangle {
                  width: 40; height: 40
                  color: Qt.rgba(0.5+(48 - index)*Math.random()/48,
                                 0.3+index*Math.random()/48,
                                 0.3*Math.random(),
                                 1.0)
                  Text {
                      text: index+1
                      color: "white"
                      font.pixelSize: 18
                      anchors.centerIn: parent
                  }
              }
          }
      }
  }